AD7739 Analog Devices, AD7739 Datasheet - Page 3

• Manufacturer Part Number: AD7739
• Description: 8-Channel, 4 kHz, 24-Bit Sigma-Delta A/D Converter
• Manufacturer: Analog Devices

Specifications of AD7739

• Resolution (bits): 24bit
• # Chan: 8
• Sample Rate: 3.05MSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni,SE-Bip,SE-Uni
• Ain Range: Bip 0.625,Bip 1.25,Bip 2.5V,Uni 0.625,Uni 1.25,Uni 2.5V
• Adc Architecture: Sigma-Delta
• Pkg Type: SOP

AD7739—SPECIFICATIONS
Table 1. (–40°C to +105°C; AV
AINCOM = 2.5 V; Internal Buffer On, AIN Range = ±1.25 V; f
Parameter
ADC PERFORMANCE
CHOPPING ENABLED
ADC PERFORMANCE
CHOPPING DISABLED
ANALOG INPUTS
Conversion Time Rate
No Missing Codes
Output Noise
Resolution
Integral Nonlinearity (INL)
Offset Error (Unipolar, Bipolar)
Offset Drift vs. Temperature
Gain Error
Gain Drift vs. Temperature
Positive Full-Scale Error
Positive Full-Scale Drift vs. Temp.
Bipolar Negative Full-Scale Error
Common-Mode Rejection
Power Supply Rejection
Conversion Time Rate
No Missing Codes
Output Noise
Resolution
Integral Nonlinearity (INL)
Offset Error (Unipolar, Bipolar)
Offset Drift vs. Temperature
Gain Error
Gain Drift vs. Temperature
Positive Full-Scale Error
Positive Full-Scale Drift vs. Temp.
Bipolar Negative Full-Scale Error
Common-Mode Rejection
Power Supply Rejection
Analog Input Voltage
AIN, AINCOM Common-Mode/
Absolute Voltage
Analog Input Slew Rate
AIN, AINCOM Input Current
±2.5 V Range
+2.5 V Range
±1.25 V Range
+1.25 V Range
±0.625 V Range
+0.625 V Range
3
3
1
1, 2
1, 2
1, 6
3
3
1, 7
2
2
1
1, 8
1
DD
3
5
4
4
= 5 V ± 5%; DV
1
Min
372
24
80
70
737
24
0.2
DD
= 2.7 V to 3.6 V, or 5 V ± 5%; REFIN(+) = 2.5 V; REFIN(–) = 0 V,
Typ
See Table 4
See Table 5
and Table 6
±5
±10
±0.0030
95
80
See Table 7
See Table 8
and Table 9
±0.0015
±1mV
±1.5
±0.2
±2.5
±0.2
±2.5
±0.0030
75
65
±2.5
0 to +2.5
±1.25
0 to +1.25
±0.625
0 to +0.625
1
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MCLKIN
Max
11840
±0.0015
±25
±0.2
±2.5
±0.2
±2.5
15133
AV
0.5
5
= 6.144 MHz; unless otherwise noted.)
DD
– 0.3
Unit
Hz
Bits
% of FSR
µV
nV/°C
%
ppm of FS/°C
% of FSR
ppm of FS/°C
% of FSR
dB
dB
Hz
Bits
% of FSR
mV
µV/°C
%
ppm of FS/°C
% of FSR
ppm of FS/°C
% of FSR
dB
dB
V
V
V
V
V
V
V
V/Conv. Time
nA
Configure via Conv. Time Register
Before Calibration
Before Calibration
Configure via Conv. Time Register
Before Calibration
Before Calibration
Only One Channel, Chop Disabled
Test Conditions/Comments
FW ≥ 12 (Conversion Time ≥ 290 µs)
Before Calibration
After Calibration
At DC, AIN = 1 V
At DC, AIN = 1 V
FW ≥ 12 (Conversion Time ≥ 290 µs)
Before Calibration
After Calibration
At DC, AIN = 1 V
At DC, AIN = 1 V
AIN Absolute Voltage > 3 V
AD7739